Privacy First • Images are not saved on the server

AI Image Background RemoverPerfect Transparency Extraction

Upload black and white background variations to create a perfect transparent PNG. Cleanly remove backgrounds from LLM-generated images.

1

Variations

Prepare two images of the same subject with black and white backgrounds.

Black BG Prompt
White BG Prompt
2

Upload

Upload the two prepared images below.

3

Process

Click the button to extract the transparent PNG.

How does it work?

By analyzing the difference between black and white background images, we mathematically calculate the perfect Alpha transparency. This preserves complex details like hair or semi-transparent glass.

White Background Image
Black Background Image

Why Choose DuoCut?

Mathematical Precision

Unlike AI guess-work, we calculate exact alpha values for every pixel, preserving hair strands and glass transparency perfectly.

100% Client-Side Privacy

Your images never leave your device. All processing happens locally in your browser using WebAssembly technology.

Instant Results

No queue times, no server latency. Get your transparent PNGs immediately after uploading.

Perfect For

Graphic Designers

Extract assets from AI-generated images without the tedious manual masking work.

E-Commerce

Create clean product photos with transparent backgrounds for your online store instantly.

Digital Marketers

Quickly prepare ad creatives by isolating subjects from generated backgrounds.

How to Use DuoCut

1

1. Prepare Your Images

Using your preferred AI image generator (Midjourney, Stable Diffusion, DALL-E 3), generate two variations of the same prompt. Keep the 'seed' fixed to ensure the subject is identical. Change only the background color in your prompt: one with 'solid black background' and one with 'solid white background'.

2

2. Upload to DuoCut

Drag and drop your black-background image into the left slot and your white-background image into the right slot. Our system will instantly validate the dimensions match.

3

3. Extract Transparency

Click the 'Remove Background' button. DuoCut analyzes the pixel difference equation for every single pixel to mathematically solve for opacity (Alpha) and true color. Download your high-quality PNG with preserved transparency details.

About DuoCut

DuoCut is a specialized tool for AI artists and creators. While standard background removers struggle with semi-transparent details (like smoke, glass, or hair), DuoCut uses a 'difference matte' technique. By providing two reference images—one on black and one on white—we can mathematically recover the original partial transparency that single-image AI tools often miss. This makes it the professional choice for high-end asset extraction from Generative AI workflows.

Frequently Asked Questions

When AI generates images, it distinguishes between the subject and the background, but cannot completely remove the background to transparency. DuoCut uses this characteristic by comparing two images (black/white backgrounds) and extracting perfect transparency through alpha filtering.

Traditional background removal methods suffer from subtle pixel differences and blurring at the edges. DuoCut's Two-Alpha method is based on mathematical calculations, so these problems don't occur.

See detailed principle

No. Your uploaded images are NOT transmitted to our servers. All processing is performed locally in your browser, and images are immediately cleared from memory after processing.

View Privacy Policy

DuoCut supports JPG, PNG, and WEBP image formats for input. The output is always a high-quality PNG file with full alpha transparency support, ensuring compatibility with all major design tools.

Generate two images of the same subject using AI tools like Midjourney, Stable Diffusion, or DALL-E. Keep the seed value fixed and change only the background color in your prompt - one with 'solid black background' and one with 'solid white background'. Then upload both images to DuoCut.